Linear Hall-Effect Sensor ICs with Analog Output

Available in a Miniature, Low-Profile Surface-Mount Package

A1308 and

A1309

8

Allegro MicroSystems, LLC

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

Undervoltage Lockout. The A1308 and A1309 provide an

undervoltage lockout feature which ensures that the device out-

The undervoltage lockout feature provides a hysteresis of opera-

tion to eliminate indeterminate output states.

The output of the A1308 and A1309 is held low (GND) until

VOUT output is enabled, providing a ratiometric output voltage

after the device is powered up, the output would be pulled low

be reenabled.

A1308 or A1309 is being power-cycled (for example using a

multiplexer to toggle the part on and off), the specification of

can be tolerated while still ensuring proper operation and startup

of the device (see Figure 4).

Figure 3: Definition of Undervoltage Lockout

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